linux-kernel - Re: spi_fsl_spi broken when compiled as module by b36ece832512c1a0afa54ff0a56d63492a1caf08

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Message-ID: <BANLkTikGM=v09KE-J_KOvbSNhQx3MmR0cA@mail.gmail.com>
Date:	Mon, 16 May 2011 12:17:13 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
Cc:	Hu Mingkai-B21284 <B21284@...escale.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kumar Gala <galak@...nel.crashing.org>
Subject: Re: spi_fsl_spi broken when compiled as module by b36ece832512c1a0afa54ff0a56d63492a1caf08

On Thu, May 12, 2011 at 9:11 AM, Lennart Sorensen
<lsorense@...lub.uwaterloo.ca> wrote:
> On Thu, May 12, 2011 at 01:33:55AM +0000, Hu Mingkai-B21284 wrote:
>> Please submit a patch to modify it.
>
> OK.  Here it is.

>
> --
> Len Sorensen
>
> Add missing exports and module license to allow compiling of spi_fsl_*
> drivers as modules again.  Originally broken by refactoring of code in
> b36ece832512c1a0afa54ff0a56d63492a1caf08.
>
> diff --git a/drivers/spi/spi_fsl_lib.c b/drivers/spi/spi_fsl_lib.c
> index ff59f42..d7efaac 100644
> --- a/drivers/spi/spi_fsl_lib.c
> +++ b/drivers/spi/spi_fsl_lib.c
> @@ -48,16 +48,23 @@ u32 mpc8xxx_spi_tx_buf_##type(struct mpc8xxx_spi *mpc8xxx_spi)      \
>  }
>
>  MPC8XXX_SPI_RX_BUF(u8)
> +EXPORT_SYMBOL(mpc8xxx_spi_rx_buf_u8);
>  MPC8XXX_SPI_RX_BUF(u16)
> +EXPORT_SYMBOL(mpc8xxx_spi_rx_buf_u16);
>  MPC8XXX_SPI_RX_BUF(u32)
> +EXPORT_SYMBOL(mpc8xxx_spi_rx_buf_u32);
>  MPC8XXX_SPI_TX_BUF(u8)
> +EXPORT_SYMBOL(mpc8xxx_spi_tx_buf_u8);
>  MPC8XXX_SPI_TX_BUF(u16)
> +EXPORT_SYMBOL(mpc8xxx_spi_tx_buf_u16);
>  MPC8XXX_SPI_TX_BUF(u32)
> +EXPORT_SYMBOL(mpc8xxx_spi_tx_buf_u32);

EXPORT_SYMBOL_GPL() please.


>
>  struct mpc8xxx_spi_probe_info *to_of_pinfo(struct fsl_spi_platform_data *pdata)
>  {
>        return container_of(pdata, struct mpc8xxx_spi_probe_info, pdata);
>  }
> +EXPORT_SYMBOL(to_of_pinfo);

Hmmm,. this is not so good because it exports rather generically named
functions out to the global namespace.  These functions should be
renamed to have an mpc8xxx_spi_ prefix before exporting.

Otherwise this patch looks good.

g.

>
>  void mpc8xxx_spi_work(struct work_struct *work)
>  {
> @@ -116,6 +123,7 @@ const char *mpc8xxx_spi_strmode(unsigned int flags)
>        }
>        return "CPU";
>  }
> +EXPORT_SYMBOL(mpc8xxx_spi_strmode);
>
>  int mpc8xxx_spi_probe(struct device *dev, struct resource *mem,
>                        unsigned int irq)
> @@ -168,6 +176,7 @@ int mpc8xxx_spi_probe(struct device *dev, struct resource *mem,
>  err:
>        return ret;
>  }
> +EXPORT_SYMBOL(mpc8xxx_spi_probe);
>
>  int __devexit mpc8xxx_spi_remove(struct device *dev)
>  {
> @@ -188,6 +197,7 @@ int __devexit mpc8xxx_spi_remove(struct device *dev)
>
>        return 0;
>  }
> +EXPORT_SYMBOL(mpc8xxx_spi_remove);
>
>  int __devinit of_mpc8xxx_spi_probe(struct platform_device *ofdev)
>  {
> @@ -234,3 +244,8 @@ err:
>        kfree(pinfo);
>        return ret;
>  }
> +EXPORT_SYMBOL(of_mpc8xxx_spi_probe);
> +
> +MODULE_AUTHOR("Kumar Gala");
> +MODULE_DESCRIPTION("Freescale SPI/eSPI controller driver library");
> +MODULE_LICENSE("GPL");
>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
--
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